Improvement in register-points for printing-presses



@uitrit gratis @stent @fitta ANI'en'oLAs HOPKINS', or NEW Your, N. Y.Lettera .Patent No. 70,568, dated November 5, 1867.

IMPROVEMENT IN REGISTER-POINTS POR vPRINTING-1ItFSSFS.

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'L'.O ALL WHOM IT MAY CONCERN:

Be it knownthat I, 'NICHOLAS HOPKINS, of the city, county, and tate ofNew York, have invented .a new4 and improved Point for Printing-Press;and I do hereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art to makeand use the same, reference being had to the accompanying drawings,forming. part of this specification, in which- Figure 1 is a top viewof' myimproved apparatus, open.

Figure 2 is a longitudinal section of the same, taken through the line:c z, iig. l1.

Figure 3 is a top view of the same, showing a modified form of thebearers.

Similar letters of reference indicate corresponding parts. I

My invention has for its object to furnish an improved device for thepurpose of making holes in printed sheets preparatory to their beingfolded into book form by machinery, said point-holes being necessary-toinsure perfect `register; and it consists in a hinged plate, having ametallic point attached to its movable part, kto be used in connectionwith a piece of furniture; in the combination yof one or moreV rubber orother elastic bearers with the movable part ofthe hinged plate-g in thecombination of a spring-catch with the piece of furniture and with theend of the movable part of the hinged plate, tohold it steady whilebeing used; and-in thecomhina-tion of a spring with the 'piece offurniture and with the movable part of the hinged plate, to throw itclosed automatically when released from the spring-catch; the wholebeing constructed and arranged as here- ,.in-after more fully described.

A represents a portion lof a piece of furniture, which may be five-em,three-cm, or any other desired size. Bis a metallic plate, hinged at itsmiddle point, the part b `of which is secured to the piece of furniturein such a way that when the two parts b and bz are shut up or foldedtogether, the upper surface may be iiush with the surface of the pieceof furniture. i To the middlel of the movable part b2 is attached ametallic point, C,A as shown in figs. 1, 2, and 3. The point C may beremovably attached to the plate B by having a screwthread cut upon itslower end screwing'into the said plate. Dare bearers, attached to thepart b2 of the-hinged plate B, upon each side of the point C, to preventthe rollersfrom being injured by the said point. The bearers D should beelastic, so as to vgive to` allow the point to perforatethe sheet. Thiselasticity may be obtained by making them of India rubber, orluy/placing springs beneath them, or in any other convenient way. It'desired, the bearers D may be replaced by a cone-shaped bearer through ahole, through the centre of which the point C passes, as shown in red iniig. 3. E is a catch, pivoted` in a recess at the end of the plate B, soas to take hold of the free. end of the part bz and hold it steady whilethe point is being used. -The 'catch E is held foiward by. a spring, ]i,attached to its lower end, as shownin iig.A 2. Gr is' aspx-ing, placedin a recess beneath the movable part 61"', to throw 'it shutautomatically when released from the catch E.V i

In using the device, as many pointsshould be used as holes will berequired, and they are placed atsuch a distance apart in making up theform as may be required t'o correspond with the points ofthe foldingmachine. The form is now loclred up, securing the points firmly inplace, and the movable parts b2 are opened and secured by thespring-catch E. The sheet is then printed upon one side, the points Cforming the necessary holes in the sheet. .In printing the first side ofthe sheet the tympan-sheet remains stationary, butin printing the,second side it moves slightly after each-impression, so that if thepointsC were left exposed they would in a 'short time cut slits init'and destroy it. To guard against this, when the second side is beingprinted the part i5! is shut down upon the part bl, the point C andbearers D passing into recesses in the furniture, as shown in f igs. 1and 2.

Having thus described my invention, what I claim-as new, and desire tosecure by Letters Patent, is-` A1. The hinged plate B, having a metallicpoint, C, attached to its movable part to be used in connection with apiece of furniture in making up the form, substantially as herein shownand described, and for the purpose set forth,

2. The combination oione or more rubber or other elastic bearers D withthe' movable part b2 of the hinged plate B, substantially as hereinshown and describedfor the purpose set forth.

The above specification o f my invention signed by lnejhs 2d day ofApril, 1867.

`NICHOLAS HOPKINS.

Witnesses:

WM. F, MeNAMARA,

JAMss T. GRAHAM,

